Shelf



FIG. 1 is an environmental perspective view of a shelf showing my newdesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is an environmental front elevational view thereof;

FIG. 4 is an environmental rear elevational view thereof;

FIG. 5 is an environmental right side elevational view thereof;

FIG. 6 is an environmental left side elevational view thereof; and,

FIG. 7 is an environmental bottom plan view thereof.

The broken line showing of supports and brackets in FIGS. 1, 3, and 5-7and of brackets in FIG. 4 are for illustrative purposes only, merelydisclosing the types of brackets and supports which can be used, andforms no part of the claimed design.

The ornamental design for a shelf, as shown and described.